Radio communication base station apparatus and resource block allocation method

Abstract

A base station can perform distributed allocation enabling a resource block allocation with a higher priority while suppressing a control information amount. In this base station, the localized allocation of data to terminals # 5 to # 8 is set to a higher priority than distributed allocation of data to terminals # 1 to # 4 among the terminals # 1 to # 8 . The data to the terminals # 5 to # 8 are allocated to any of the resource blocks # 1 to # 8 by frequency scheduling based on line quality of each terminal and each resource block. After this, the remaining resource blocks other than the resource blocks used for allocation to the terminals # 5 to # 8 with a higher priority are used as distributed resource blocks and the data to the terminals # 1 to # 4 are allocated in the remaining resource blocks according to the allocation rule common to the terminals # 1 to # 4.

1 - 7 . (canceled) 
     
     
         8 . A radio communication base station apparatus used in a radio communication system in which a plurality of subcarriers for transmitting a multicarrier signal are grouped into a plurality of resource blocks, the apparatus comprising:
 an allocating section that, in the plurality of resource blocks, allocates data for a radio communication terminal to remaining resource blocks other than resource blocks used in a priority allocation according to an allocation rule; and   a transmitting section that transmits the multicarrier signal including the data.   
     
     
         9 . The radio communication base station apparatus according to  claim 8 , wherein the allocating section performs a distributed allocation of the data according to an allocation rule shared with the radio communication terminal. 
     
     
         10 . The radio communication base station apparatus according to  claim 8 , wherein:
 the allocation rule defines allocation positions of subcarriers to allocate data in remaining resource blocks; and   the allocating section performs a distributed allocation of the data to the remaining resource blocks according to the allocation positions.   
     
     
         11 . The radio communication base station apparatus according to  claim 10 , wherein:
 an order of the plurality of allocation rules that differ in allocation positions is determined in advance; and   with respect to a radio communication terminal to which the same allocation rule is applied over a plurality of subframes, following the order, the allocating section uses allocation rules in order from an earliest order among the allocation rules not in use for other radio communication terminals.   
     
     
         12 . The radio communication base station apparatus according to  claim 10 , wherein:
 an order of the plurality of allocation rules that differ in the allocation positions is determined in advance; and   the allocating section shifts the allocation rules in order to an earlier order over time.   
     
     
         13 . The radio communication base station apparatus according to  claim 10 , wherein:
 an order of the plurality of allocation rules that differ in allocation positions is determined in advance; and   following the order, the allocating section uses:   with respect to radio communication terminal to which the same allocation rule is applied over a plurality of subframes, allocation rules in order from an earliest order among the allocation rules not in use for other radio communication terminals; and   with respect to the radio communication terminal to which different allocation rules are applied on a per subframe basis, allocation rules in order from a latest order among the allocation rules not in use for other radio communication terminals.   
     
     
         14 . The radio communication base station apparatus according to  claim 10 , wherein:
 an order of the plurality of allocation rules that differ in allocation positions is determined in advance; and   following the order, the allocating section uses:   with respect to radio communication terminal to which the same allocation rule is applied over a plurality of subframes, allocation rules in order from a latest order among the allocation rules not in use for other radio communication terminals; and   with respect to the radio communication terminal to which different allocation rules are applied on a per subframe basis, allocation rules in order from an earliest order among the allocation rules not in use for other radio communication terminals.   
     
     
         15 . A resource allocation method used in a radio communication system in which a plurality of subcarriers for transmitting a multicarrier signal are grouped into a plurality of resource blocks, the method comprising allocating, in the plurality of resource blocks, data for a radio communication terminal to remaining resource blocks other than resource blocks used in a priority allocation according to an allocation rule.